diff --git a/src/kube-runtime/GOPATH/src/github.com/microsoft/runtime/cmd/exithandler/main.go b/src/kube-runtime/GOPATH/src/github.com/microsoft/runtime/cmd/exithandler/main.go
index cb852eb27d1..c7f238101a2 100644
--- a/src/kube-runtime/GOPATH/src/github.com/microsoft/runtime/cmd/exithandler/main.go
+++ b/src/kube-runtime/GOPATH/src/github.com/microsoft/runtime/cmd/exithandler/main.go
@@ -3,6 +3,7 @@ package main
 import (
 	"os"
 	"strconv"
+	"time"
 
 	"github.com/microsoft/runtime/pkg/aggregator"
 	"github.com/microsoft/runtime/pkg/logger"
@@ -50,6 +51,7 @@ func main() {
 	}
 
 	log.Info("start to generate the exit summary")
+	start := time.Now()
 	a, err := aggregator.NewErrorAggregator(&logFiles, log)
 	if err != nil {
 		panic("fatal: create log aggregator: " + err.Error())
@@ -74,7 +76,8 @@ func main() {
 	if err != nil {
 		panic("fatal: dumping summary info: " + err.Error())
 	}
-	log.Info("finish generating the exit summary")
+	elapsed := time.Since(start)
+	log.Info("finish generating the exit summary, time consumed:", elapsed)
 
 	os.Exit(exitInfo.Exitcode)
 }
diff --git a/src/kube-runtime/GOPATH/src/github.com/microsoft/runtime/example/config/failurePatterns.yml b/src/kube-runtime/GOPATH/src/github.com/microsoft/runtime/example/config/failurePatterns.yml
index 881c4fd9b4c..d2b5cab7a0f 100644
--- a/src/kube-runtime/GOPATH/src/github.com/microsoft/runtime/example/config/failurePatterns.yml
+++ b/src/kube-runtime/GOPATH/src/github.com/microsoft/runtime/example/config/failurePatterns.yml
@@ -7,9 +7,6 @@
 - patterns:
   - exitCode: 1
     userLogRegex: exec\(compile\(getattr\(token[a-z]*, 'open', open\)\(__file__\)
-  reason: Failed to open tocken file
-  solution:
-    - Please check the tocken file path
   containerExitCode: 10
 
 - patterns:
@@ -17,30 +14,18 @@
     userLogRegex: failed with error code 1 in /tmp/[a-z]*
   - exitCode: 1
     userLogRegex: package not find [a-z]*
-  reason: Some package not install property
-  solution:
-    - Please check the pip install command
   containerExitCode: 12
 
 - patterns:
   - exitCode: 1
     userLogRegex: connect tensorboard failed
     platformLogRegex: Failed to start tensorboard
-  reason: Tensorboad not startup correctly
-  solution:
-    - Please try again or connect admin
   containerExitCode: 15
 
 - patterns:
   - exitCode: 137
-  reason: User program terminated by SIGKILL
-  solution:
-    - Please check the log and retry again
   containerExitCode: 137
 
 - patterns:
   - exitCode: 143
-  reason: User program terminated by SIGTERM
-  solution:
-    - Please check the log and retry again
   containerExitCode: 143
\ No newline at end of file
diff --git a/src/kube-runtime/GOPATH/src/github.com/microsoft/runtime/pkg/aggregator/error_aggregator.go b/src/kube-runtime/GOPATH/src/github.com/microsoft/runtime/pkg/aggregator/error_aggregator.go
index 09cdb6f83fe..961b5fe4ba6 100644
--- a/src/kube-runtime/GOPATH/src/github.com/microsoft/runtime/pkg/aggregator/error_aggregator.go
+++ b/src/kube-runtime/GOPATH/src/github.com/microsoft/runtime/pkg/aggregator/error_aggregator.go
@@ -348,10 +348,26 @@ func (a *ErrorAggregator) getTailContentFromFile(f *os.File, maxTailSize int64)
 	return content, err
 }
 
-func (a *ErrorAggregator) truncateLog(logConent *string, truncateSize int) (*string, int) {
+func (a *ErrorAggregator) truncateLog(logConent *string, truncateSize int, matchString *string) (*string, int) {
+	if logConent == nil {
+		return nil, 0
+	}
+
 	logSize := len(*logConent)
+	matchBeginPos := -1
+	if matchString != nil {
+		matchBeginPos = strings.Index(*logConent, *matchString)
+	}
+
 	if logSize > truncateSize {
-		truncatedLog := (*logConent)[truncateSize:]
+		if matchString == nil || matchBeginPos == -1 || matchBeginPos > truncateSize {
+			truncatedLog := (*logConent)[truncateSize:]
+			return &truncatedLog, logSize - len(truncatedLog)
+		}
+		// try to keep the match string as much as posible
+		truncatedLog := (*logConent)[matchBeginPos:]
+		remainTruncateSize := truncateSize - matchBeginPos
+		truncatedLog = truncatedLog[:len(truncatedLog)-remainTruncateSize]
 		return &truncatedLog, logSize - len(truncatedLog)
 	}
 	return nil, logSize
@@ -372,7 +388,7 @@ func (a *ErrorAggregator) truncateExitSummary(runtimeExitInfo *RuntimeExitInfo)
 
 	if runtimeExitInfo.ErrorLogs != nil {
 		// truncate runtime log first
-		truncatedRuntimeLog, trucatedSize := a.truncateLog(runtimeExitInfo.ErrorLogs.Platform, remainTruncateSize)
+		truncatedRuntimeLog, trucatedSize := a.truncateLog(runtimeExitInfo.ErrorLogs.Platform, remainTruncateSize, runtimeExitInfo.MatchedPlatformLogString)
 		runtimeExitInfo.ErrorLogs.Platform = truncatedRuntimeLog
 		remainTruncateSize = remainTruncateSize - trucatedSize
 		if remainTruncateSize <= 0 {
@@ -381,7 +397,7 @@ func (a *ErrorAggregator) truncateExitSummary(runtimeExitInfo *RuntimeExitInfo)
 		}
 
 		// truncate the user log
-		truncatedUserLog, trucatedSize := a.truncateLog(runtimeExitInfo.ErrorLogs.User, remainTruncateSize)
+		truncatedUserLog, trucatedSize := a.truncateLog(runtimeExitInfo.ErrorLogs.User, remainTruncateSize, runtimeExitInfo.MatchedUserLogString)
 		runtimeExitInfo.ErrorLogs.User = truncatedUserLog
 		remainTruncateSize = remainTruncateSize - trucatedSize
 
@@ -440,17 +456,20 @@ func NewErrorAggregator(l *LogFiles, logger *logger.Logger) (*ErrorAggregator, e
 		return nil, errors.New("logger not provide")
 	}
 
+	const exitInfoBeginTag = "[PAI_RUNTIME_ERROR_START]"
+	const exitInfoEndTag = "[PAI_RUNTIME_ERROR_END]"
+
 	a := ErrorAggregator{
 		logFiles:            l,
 		logger:              logger,
-		maxAggregateLogSize: 4096,
+		maxAggregateLogSize: 4096 - len(exitInfoBeginTag) - len(exitInfoEndTag),
 		maxMatchLogLen:      2048,
-		maxUserLogLines:     20,
+		maxUserLogLines:     15,
 		maxRuntimeLogLines:  10,
 		defaulExitCode:      255,
 		maxSearchLogSize:    10 * 1024 * 1024, // 10MB
-		aggExitInfoBegin:    "[PAI_RUNTIME_ERROR_START]",
-		aggExitInfoEnd:      "[PAI_RUNTIME_ERROR_END]",
+		aggExitInfoBegin:    exitInfoBeginTag,
+		aggExitInfoEnd:      exitInfoEndTag,
 	}
 	return &a, nil
 }